As per the GWT Announcements (Release note 2.6),
· GWT Development Mode will no longer be available for Chrome sometime in 2014, so we improved alternate ways of debugging. There are improvements to Super Dev Mode, asserts, console logging, and error messages.
So Lunching the Application in Chrome Newer Version with Classic Dev Mode is Disabled, because they have disabled NPAPI Plug-in in Chrome Newer Version. Now it's time to use Super Dev Mode
SuperDev mode as default in GWT 2.7:
Other Workaround to Launch the Apps in Chrome Newer Version With Classic Dev Mode is to Enable NPAPI Flag, Follow the Below Steps
1.Open New Tab and Enter chrome://flags/#enable-npapi
2.Enable this Enable NPAPI Mac, Windows
3.Then bottom of the page click "Relunch" button.
**NPAPI is scheduled to be removed from Chrome(version 45) in September 2015 and this workaround will be supported up to chrome 44 version only.On Wednesday, April 22, 2015 at 11:44:22 PM UTC+5:30, Juan Pablo Gardella wrote:
For some people that want to use classical dev mode in chrome (super devmode works very well indeed), you can enable NPAPI plugins accesing chrome://flags/#enable-npapi.
Recently, Google Chrome (version 42) disabled the use of NPAPI plugins.
This is a one-off method, unless using group policy with Chrome
"Although plugin vendors are working hard to move to alternate technologies, a small number of users still rely on plugins that haven't completed the transition yet. We will provide an override for advanced users (via chrome://flags/#enable-
npapi) and enterprises (via Enterprise Policy) to temporarily re-enable NPAPI (via the page action UI) while they wait for mission-critical plugins to make the transition."
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